Use of silane coupling agents to improve epoxy-rubber interface |
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Authors: | Cevdet Kaynak Cengiz Celikbilek |
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Institution: | a Departments of Chemistry and Polymer Science and Technology, Middle East Technical University, TR-06531 Ankara, Turkey b Department of Metallurgical and Materials Engineering, Middle East Technical University, TR-06531 Ankara, Turkey |
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Abstract: | Scrap car tyre particles can be used as filler or toughening agent in rigid epoxy matrices if the resultant interface is adequate. The objective of this work was to investigate the effects of use of different silane coupling agents (SCAs) to improve the interface between the epoxy resin and recycled rubber particles. For this purpose, seven different SCA were used to modify surfaces of the rubber particles. After the preparation of epoxy-rubber specimens, tensile Charpy impact and plane-strain fracture toughness tests were conducted. Mechanical tests and fractographic studies revealed that some of the SCA can improve of the interface between the epoxy matrix and the rubber particles leading to increases in strength while slight decreases in toughness of the samples. |
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Keywords: | Epoxy resin Recycled rubber particles Silane coupling agents (SCAs) Surface modification |
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